Absolutely.
Those weak of will, mind, heart, and conscience will betray you in an instant.

Are you trying to say that every kind of betrayal is wrong? I would say that it can be justified at times. It all depends on one's point of view. What if Brutus hadn't betrayed Caesar? Questions like that one is what comes to mind. The answer depends on what you thought of Caesar.

Yes all humans will betray someone one time or another. But not all betrayals are bad. As long as you don't do it out of your own greed or jealousy It might actually be a good thing. Almost like a white lie.

Not everyone is born selfless, but most people are born selfish. My mother is probably one of the most selfless people you'll ever meet, and my father is the complete opposite. I am mostly selfless but I call it when I need to be selfish, or at least when I think I deserve it. But betraying people is low. I know how it feels to be betrayed over and over, and out of empathy I never betray someone who trusts me. I am human, and maybe I could fail, but I sure as hell know I wouldn't do it on purpose.